| In force components |
Number
|
Title |
Status |
Q.552 (11/01)
|
Transmission characteristics at 2-wire analogue interfaces of digital exchanges
|
In force
|
|
| Superseded and Withdrawn components |
Number
|
Title |
Status |
Q.552 (11/88)
|
Transmission characteristics at 2-wire analogue interfaces of digital exchange
Replaces Q.507 (1984) and Q.517 (1984)
|
Superseded
|
Q.552 (01/94)
|
Transmission characteristics at 2-wire analogue interfaces of digital exchanges
|
Superseded
|
Q.552 (11/96)
|
Transmission characteristics at 2-wire analogue interfaces of digital exchanges
|
Superseded
|
